Panama Canal Regulations § 135.13

(f) Passenger means every person § 135.13 Determination of PC/UMS Net other than: Tonnage. (1) the master and the members of PC/UMS Net Tonnage shall be deter- the crew or other persons employed or mined as follows: engaged in any capacity on board a (a) For all vessels with tolls fixed in ship on the business of that ship; and accordance with § 133.1(a) or (b) of this (2) a child under one year of age. chapter, unless subject to the transi- (g) Weathertight means that in any tional relief measures established in sea conditions water will not penetrate § 135.31 of this chapter, the formula for into the ship. determining PC/UMS Net Tonnage is:

PC/UMS Net Tonnage=K4(V)+K5(V) +CF1(VMC) in which formula:

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(1) ‘‘K4’’={0.25 + [0.01 × Log10(V)]} × (b) For vessels subject to transitional 0.830 relief measures, the existing Panama

(2) ‘‘K5’’=[Log10(DA–19)]/{[Log10(DA– Canal Net Tonnage as specified on the 16)] × 17}. If the number of passengers certificate issued by the Commission (N1 + N2) is greater than 100 or DA is plus CF1 (VMC) shall be the PC/UMS equal to or less than 20.0 meters then Net Tonnage. In such case, the formula K5 is equal to zero. for determining PC/UMS Net Tonnage (3) ‘‘V’’=Total volume of all enclosed is: PC/UMS Net Tonnage=Panama spaces of the ship in cubic meters and Canal Net Tonnage+CF1(VMC). is identical to V as specified in the 1969 [59 FR 43255, Aug. 22, 1994, as amended at 61 International Convention on Tonnage FR 60612, Nov. 29, 1996] Measurement of Ships. (4) ‘‘DA’’ (Average depth)=The result § 135.14 Change of PC/UMS Net Ton- of the division of the Total Volume by nage. the product of the length in meters (a) Vessels whose PC/UMS Net Ton- multiplied by the moulded breadth in nage is determined in accordance with meters. DA=V/(L × MB). § 135.13(a) shall have a new PC/UMS Net (5) ‘‘L’’ (Length) is defined as 96 per- Tonnage issued if ‘‘V’’ changes. cent of the total length on a waterline (b) A vessel whose PC/UMS Net Ton- at 85 percent of the least moulded nage is determined in accordance with depth measured from the top of the § 135.13(b) shall retain that tonnage keel, or the length from the fore side of until the vessel undergoes a significant the stem to the axis of the rudder structural change as defined in stock on that waterline, if that be § 135.14(c). In the event of a significant greater. In ships designed with a rake structural change, the vessel’s PC/UMS of keel, the waterline on which this Net Tonnage shall be determined in ac- length is measured shall be parallel to cordance with § 135.13(a). the designed waterline. (c) For the purposes of paragraph (b) (6) Moulded breadth is defined in of this section, significant structural § 135.12(c). change means an actual change of at

(7) N1=number of passengers in cabins least 10 percent in the total volume of with not more than 8 berths. the vessel. Vessels without compara- tive ITC 69 total volumes, or other (8) N2=number of other passengers. suitable sources of total volume com- (9) N1 + N2=total number of passengers the ship is permitted to carry parison, shall have a fair and equitable as indicated in the ship’s passenger cer- volume comparison made by the Com- tificate. mission to determine if a significant structural change has occurred. (10) ‘‘CF1’’=.031 for ships which the Commission determines are designed to (d) If the VMC of a vessel is changed carry containers on or above the upper due to any physical modification after the vessel’s PC/UMS Net Tonnage has deck; otherwise ‘‘CF1’’=0. In making the foregoing determination, the Com- been determined at the Canal, the PC/ mission may consider documentation UMS Net Tonnage may be revised by provided by such officials as are au- the Commission. thorized by national governments to [59 FR 43255, Aug. 22, 1994, as amended at 61 undertake surveys and issue national FR 60612, Nov. 29, 1996] tonnage certificates. (11) ‘‘VMC’’=the volume (in cubic me- § 135.15 Calculation of volumes. ters) of maximum capacity of the con- (a) All volumes included in the cal- tainers that can be carried on or above culation of PC/UMS Net Tonnage shall the upper deck. This volume may be be measured, irrespective of the fitting calculated by multiplying the maxi- of insulation or the like, to the inner mum number of containers by 29.2 m3, side of the shell or structural boundary or by other generally accepted methods plating in ships constructed of metal, that meet the Commission’s accuracy and to the outer surface of the shell or standards. VMC will not include any to the inner side of structural bound- container capacity that is included in ary surfaces in ships constructed of ‘‘V’’. any other material.

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